def test_removeOption_noneLeft(self):
"""removeOption should cull options and return F when none left."""
test = SearchNode(SearchNodeHelper.alphabet)
num_options = len(test.Options)
#removeOption num_options times: that should get 'em all
for i in xrange(num_options): some_left = test.removeOption()
#return value should be false (no options remain)
self.assertEqual(some_left, False)
def test_removeOption_someLeft(self):
"""removeOption should cull options and return T when some left."""
#create a search node and get its current value
test = SearchNode(SearchNodeHelper.alphabet)
last_val = test.Value
some_left = test.removeOption()
#new current value must be different from old
#and return value must be true
self.assertNotEqual(test.Value, last_val)
self.assertEqual(some_left, True)
def test_check_forbidden_seqs_none(self):
"""Should return False if path includes no forbidden seqs"""
#a seq that isn't in the standard fixed forbidden lib
allowed_seq = ["C", "U", "A", "T"]
test = SearchPath(SearchPathHelper.alphabets, \
SearchPathHelper.standard_forbid_seq)
test._add_node(SearchNode(SearchNodeHelper.alphabet))
#add more values, and cheat so as to make them something known
for known_val in allowed_seq:
curr_node = SearchNode(SearchNodeHelper.alphabet)
curr_node._options[0] = known_val #torque the node's innards
test._add_node(curr_node)
#next bad_val
real_result = test._check_forbidden_seqs()
self.assertEquals(real_result, False)
def test_check_forbidden_seqs_fixed(self):
"""Should return True if path includes a fixed forbidden seq"""
forbidden_seq = ["G", "U", "A"]
user_input = ["".join(forbidden_seq)]
user_input.extend(SearchPathHelper.standard_forbid_seq)
test = SearchPath(SearchPathHelper.alphabets, user_input)
test._add_node(SearchNode(SearchNodeHelper.alphabet))
#add more values, and cheat so as to make them something forbidden
for bad_val in forbidden_seq:
curr_node = SearchNode(SearchNodeHelper.alphabet)
curr_node._options[0] = bad_val #torque the node's innards
test._add_node(curr_node)
#next bad_val
real_result = test._check_forbidden_seqs()
self.assertEquals(real_result, True)
